Abstract
This study mainly develops a high-efficiency single-input triple-outputs dc/dc converter (HSTDC) with a soft-switching technique for high step-up applications. In general, multiple output voltages with only one single input power source is always required for the applications of renewable energy or electric vehicles. At the high step-up operation, the proposed HSTDC has a high voltage conversion ratio to sustain the high-voltage dc bus for the utilization of dc/ac inverter. The proposed HSTDC uses a coupled inductor with lower turn ratios to achieve the high step-up voltage gain and adopts an auxiliary inductor to adjust the voltage of the auxiliary output terminal indirectly. Moreover, the utilization of voltage clamping and zero-current switching (ZCS) in the proposed HSTDC is helpful for accomplishing the goal of high-efficiency power conversion and three output voltage levels. In addition, the effectiveness of the proposed HSTDC is verified by rich experimental results.
Highlights
Multiple-output dc/dc converters have been widely used in many applications, such as hybrid electric vehicles, space crafts, uninterruptible power systems, and so on [1]–[5]
To demonstrate the proposed high-efficiency single-input triple-outputs dc/dc converter (HSTDC) in practical applications, the maximum power at the high-voltage-side circuit (HVSC) is set at 800W; the maximum power at the auxiliary circuit is set at 100W, and the maximum power at the middle-voltage output terminal is set at 100W for validating the experimental prototype
EXPERIMENTAL RESULTS In order to verify the effectiveness of the proposed high-efficiency single-input triple-outputs dc/dc converter (HSTDC) in practical applications, the experimentations of the proposed HSTDC are provided
Summary
Multiple-output dc/dc converters have been widely used in many applications, such as hybrid electric vehicles, space crafts, uninterruptible power systems, and so on [1]–[5]. By dealing with the issue of global warning, clean energies, such as fuel cell, photovoltaic, and wind energy, etc., have been rapidly promoted [6]–[8]. For the improvement of the global environmental issue and lack of natural energy, the evolution of electric vehicles with renewable energy as a replacement for the fossil-fuel vehicle has rapidly developed [9]. The requirement of high step-up converter with high-efficiency power conversion, a smaller volume, and a lower manufacturing cost has been increasing in the last decade [10], [15]–[17]. A 1kW experimental prototype with a lower inputcurrent ripple for a grid-connected photovoltaic system was designed in [10], it absolutely increased the manufacturing cost and the circuit volume by using two coupled inductors. In spite of an ultra-step-up converter was presented for the high-efficiency application in [11], the corresponding
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
